1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* nvidia-xconfig: A tool for manipulating XF86Config files,
* specifically for use by the NVIDIA Linux graphics driver.
*
* Copyright (C) 2004 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses>.
*
*
* util.c
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <pwd.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "nvidia-xconfig.h"
#include "msg.h"
Options *__op = NULL;
/*
* copy_file() - copy the file specified by srcfile to dstfile, using
* mmap and memcpy. The destination file is created with the
* permissions specified by mode. Roughly based on code presented by
* Richard Stevens, in Advanced Programming in the Unix Environment,
* 12.9.
*/
int copy_file(const char *srcfile, const char *dstfile, mode_t mode)
{
int src_fd = -1, dst_fd = -1;
struct stat stat_buf;
char *src, *dst;
int ret = FALSE;
if ((src_fd = open(srcfile, O_RDONLY)) == -1) {
nv_error_msg("Unable to open '%s' for copying (%s)",
srcfile, strerror (errno));
goto done;
}
if ((dst_fd = open(dstfile, O_RDWR | O_CREAT | O_TRUNC, mode)) == -1) {
nv_error_msg("Unable to create '%s' for copying (%s)",
dstfile, strerror (errno));
goto done;
}
if (fstat(src_fd, &stat_buf) == -1) {
nv_error_msg("Unable to determine size of '%s' (%s)",
srcfile, strerror (errno));
goto done;
}
if (stat_buf.st_size == 0) {
/* src file is empty; silently ignore */
ret = TRUE;
goto done;
}
if (lseek(dst_fd, stat_buf.st_size - 1, SEEK_SET) == -1) {
nv_error_msg("Unable to set file size for '%s' (%s)",
dstfile, strerror (errno));
goto done;
}
if (write(dst_fd, "", 1) != 1) {
nv_error_msg("Unable to write file size for '%s' (%s)",
dstfile, strerror (errno));
goto done;
}
if ((src = mmap(0, stat_buf.st_size, PROT_READ,
MAP_SHARED, src_fd, 0)) == (void *) -1) {
nv_error_msg("Unable to map source file '%s' for "
"copying (%s)", srcfile, strerror (errno));
goto done;
}
if ((dst = mmap(0, stat_buf.st_size, PROT_READ | PROT_WRITE,
MAP_SHARED, dst_fd, 0)) == (void *) -1) {
nv_error_msg("Unable to map destination file '%s' for "
"copying (%s)", dstfile, strerror (errno));
goto done;
}
memcpy(dst, src, stat_buf.st_size);
if (munmap (src, stat_buf.st_size) == -1) {
nv_error_msg("Unable to unmap source file '%s' after "
"copying (%s)", srcfile, strerror (errno));
goto done;
}
if (munmap (dst, stat_buf.st_size) == -1) {
nv_error_msg("Unable to unmap destination file '%s' after "
"copying (%s)", dstfile, strerror (errno));
goto done;
}
ret = TRUE;
done:
if (src_fd != -1) close(src_fd);
if (dst_fd != -1) close(dst_fd);
return ret;
} /* copy_file() */
/*
* xconfigPrint() - this is the one entry point that a user of the
* XF86Config-Parser library must provide.
*/
void xconfigPrint(MsgType t, const char *msg)
{
typedef struct {
MsgType msg_type;
char *prefix;
FILE *stream;
int newline;
} MessageTypeAttributes;
char *prefix = NULL;
int i, newline = FALSE;
FILE *stream = stdout;
const MessageTypeAttributes msg_types[] = {
{ ParseErrorMsg, "PARSE ERROR: ", stderr, TRUE },
{ ParseWarningMsg, "PARSE WARNING: ", stderr, TRUE },
{ ValidationErrorMsg, "VALIDATION ERROR: ", stderr, TRUE },
{ InternalErrorMsg, "INTERNAL ERROR: ", stderr, TRUE },
{ WriteErrorMsg, "ERROR: ", stderr, TRUE },
{ WarnMsg, "WARNING: ", stderr, TRUE },
{ ErrorMsg, "ERROR: ", stderr, TRUE },
{ DebugMsg, "DEBUG: ", stdout, FALSE },
{ UnknownMsg, NULL, stdout, FALSE },
};
for (i = 0; msg_types[i].msg_type != UnknownMsg; i++) {
if (msg_types[i].msg_type == t) {
prefix = msg_types[i].prefix;
newline = msg_types[i].newline;
stream = msg_types[i].stream;
break;
}
}
if (newline) nv_info_msg_to_file(stream, NULL, "");
nv_info_msg_to_file(stream, prefix, "%s", msg);
if (newline) nv_info_msg_to_file(stream, NULL, "");
} /* xconfigPrint */
|
